diff --git a/src/komodo_globals.h b/src/komodo_globals.h
index e945beeee..144064d7a 100644
--- a/src/komodo_globals.h
+++ b/src/komodo_globals.h
@@ -44,7 +44,7 @@ struct komodo_state KOMODO_STATES[34];
 int COINBASE_MATURITY = _COINBASE_MATURITY;//100;
 
 int32_t IS_KOMODO_NOTARY,USE_EXTERNAL_PUBKEY,KOMODO_CHOSEN_ONE,ASSETCHAINS_SEED,KOMODO_ON_DEMAND,KOMODO_EXTERNAL_NOTARIES,KOMODO_PASSPORT_INITDONE,KOMODO_PAX,KOMODO_EXCHANGEWALLET,KOMODO_REWIND;
-int32_t KOMODO_LASTMINED,prevKOMODO_LASTMINED;
+int32_t KOMODO_LASTMINED,prevKOMODO_LASTMINED,JUMBLR_PAUSE;
 std::string NOTARY_PUBKEY,ASSETCHAINS_NOTARIES;
 uint8_t NOTARY_PUBKEY33[33];
 
diff --git a/src/komodo_interest.h b/src/komodo_interest.h
index 97f288b4c..63d0152ca 100644
--- a/src/komodo_interest.h
+++ b/src/komodo_interest.h
@@ -82,7 +82,7 @@ uint64_t komodo_moneysupply(int32_t height)
 uint64_t _komodo_interestnew(uint64_t nValue,uint32_t nLockTime,uint32_t tiptime)
 {
     int32_t minutes; uint64_t interest = 0;
-    if ( (minutes= (tiptime - nLockTime) / 60) >= 60 )
+    if ( tiptime > nLockTime && (minutes= (tiptime - nLockTime) / 60) >= 60 )
     {
         if ( minutes > 365 * 24 * 60 )
             minutes = 365 * 24 * 60;
diff --git a/src/komodo_jumblr.h b/src/komodo_jumblr.h
index a5eff09a5..951ed9de0 100755
--- a/src/komodo_jumblr.h
+++ b/src/komodo_jumblr.h
@@ -630,6 +630,8 @@ void jumblr_iteration()
 {
     static int32_t lastheight; static uint32_t lasttime;
     char *zaddr,*addr,*retstr,secretaddr[64]; cJSON *array; int32_t i,iter,height,counter,chosen_one,n; uint64_t smallest,medium,biggest,amount=0,total=0; double fee; struct jumblr_item *ptr,*tmp; uint16_t r,s;
+    if ( JUMBLR_PAUSE != 0 )
+        return;
     if ( lasttime == 0 )
     {
         if ( (retstr= jumblr_zlistaddresses()) != 0 )
diff --git a/src/rpcmisc.cpp b/src/rpcmisc.cpp
index 42307470f..6008e341d 100644
--- a/src/rpcmisc.cpp
+++ b/src/rpcmisc.cpp
@@ -47,7 +47,7 @@ uint64_t komodo_interestsum();
 int32_t komodo_longestchain();
 int32_t komodo_notarized_height(uint256 *hashp,uint256 *txidp);
 int32_t komodo_whoami(char *pubkeystr,int32_t height);
-extern int32_t KOMODO_LASTMINED;
+extern int32_t KOMODO_LASTMINED,JUMBLR_PAUSE;
 extern char ASSETCHAINS_SYMBOL[];
 int32_t notarizedtxid_height(char *dest,char *txidstr,int32_t *kmdnotarized_heightp);
 #define KOMODO_VERSION "0.1.1"
@@ -224,6 +224,26 @@ UniValue jumblr_secret(const UniValue& params, bool fHelp)
     return(result);
 }
 
+UniValue jumblr_pause(const UniValue& params, bool fHelp)
+{
+    int32_t retval; UniValue result(UniValue::VOBJ);
+    if (fHelp )
+        throw runtime_error("jumblr_pause\n");
+    JUMBLR_PAUSE = 1;
+    result.push_back(Pair("result", "paused"));
+    return(result);
+}
+
+UniValue jumblr_resume(const UniValue& params, bool fHelp)
+{
+    int32_t retval; UniValue result(UniValue::VOBJ);
+    if (fHelp )
+        throw runtime_error("jumblr_resume\n");
+    JUMBLR_PAUSE = 0;
+    result.push_back(Pair("result", "resumed"));
+    return(result);
+}
+
 UniValue validateaddress(const UniValue& params, bool fHelp)
 {
     if (fHelp || params.size() != 1)
diff --git a/src/rpcserver.cpp b/src/rpcserver.cpp
index 518ba4693..94521004d 100644
--- a/src/rpcserver.cpp
+++ b/src/rpcserver.cpp
@@ -338,6 +338,8 @@ static const CRPCCommand vRPCCommands[] =
     { "util",               "z_validateaddress",      &z_validateaddress,      true  }, /* uses wallet if enabled */
     { "util",               "jumblr_deposit",       &jumblr_deposit,       true  },
     { "util",               "jumblr_secret",        &jumblr_secret,       true  },
+    { "util",               "jumblr_pause",        &jumblr_pause,       true  },
+    { "util",               "jumblr_resume",        &jumblr_resume,       true  },
 
     /* Not shown in help */
     { "hidden",             "invalidateblock",        &invalidateblock,        true  },
diff --git a/src/rpcserver.h b/src/rpcserver.h
index ecf7b0573..f59972472 100644
--- a/src/rpcserver.h
+++ b/src/rpcserver.h
@@ -248,6 +248,8 @@ extern UniValue zc_sample_joinsplit(const UniValue& params, bool fHelp);
 
 extern UniValue jumblr_deposit(const UniValue& params, bool fHelp);
 extern UniValue jumblr_secret(const UniValue& params, bool fHelp);
+extern UniValue jumblr_pause(const UniValue& params, bool fHelp);
+extern UniValue jumblr_resume(const UniValue& params, bool fHelp);
 
 extern UniValue getrawtransaction(const UniValue& params, bool fHelp); // in rcprawtransaction.cpp
 extern UniValue listunspent(const UniValue& params, bool fHelp);